Renesas SH7781 - Manual (Page 829)

18. Timer Unit (TMU)
Rev.1.00 Jan. 10, 2008 Page 799 of 1658
REJ09B0261-0100
Section 18 Timer Unit (TMU)
This LSI includes an on-chip 32-bit timer unit (TMU), which has six channels (channels 0 to 5).
18.1 Features
The TMU has the following features.
• Auto-reload type 32-bit down-counter provided for each channel
• Input capture function provided only for channel 2
• Selection of rising edge or falling edge as external clock input edge when external clock is
selected or input capture function is used: Channels 0 to 2
• 32-bit timer constant register for auto-reload use, readable/writable at any time, and 32-bit
down-counter provided for each channel
• Selection of six counter input clocks: Channels 0 to 2
External clock (TCLK) and five internal clocks (Pck/4, Pck/16, Pck/64, Pck/256, and
Pck/1024) obtained by dividing the peripheral clock (Pck is the peripheral clock).
• Selection of five counter input clocks: Channels 3 to 5
Five internal clocks (Pck/4, Pck/16, Pck/64, Pck/256, and Pck/1024) (Pck is the peripheral
clock).
• Two interrupt sources
One underflow source (each channel) and one input capture source (channel 2).